package visibility

import "fmt"

const PI = 3.145
const pi = 3.14
const _PI = 3.14

var P int = 1
var p int = 1

//方法名小写，仅限当前包下使用
func private_function() {
	fmt.Println("only used in this package!")
}

//方法名大写，可在当前包之外访问（方法导出）
func Public_fuction() {
	fmt.Println("used in anywhere!")
}
